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Tim's Auto Repair
Tim's Auto Repair, Mechanic
Category: Car
Satisfied Customers: 12444
Experience:  Have owned a repair shop for 25 yrs.
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isuzu pup: how do i set the Injection Timing on 1982 isuzu

Customer Question

how do i set the Injection Timing on 1982 isuzu pup diesel 2.2l
Submitted: 1 year ago.
Category: Car
Expert:  Tim's Auto Repair replied 1 year ago.

tims auto repair :

hi

tims auto repair :
1982 Isuzu Truck Pickup L4-2238cc DSL (C223)
Timing Component Alignment Marks Locations, Components
38_isufa111020020.png
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Fig. 20 Crankshaft pulley, injection pump pulley and camshaft pulley timing marks

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Fig. 22 Positioning crankshaft to set injection pump

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Fig. 23 Injection pump flange & camshaft timing pulley alignment marks




CAUTION: Incorrect removal or installation of the timing belt can result in damage to internal engine components.

tims auto repair :
1982 Isuzu Truck Pickup L4-2238cc DSL (C223)
Diesel MFI Pump Service and Repair, Procedures: Injection Pump Replace




1. Remove battery and under cover.
2. Drain cooling system and disconnect upper radiator hose at engine.
3. Remove cooling fan and shroud and disconnect lower radiator hose at engine.
4. Remove air conditioner compressor, if used.
5. Remove fan belt and crankshaft pulley.
6. Remove timing pulley housing covers. Refer to ``Timing Pulley Housing Covers, Replace'' for procedure.

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Fig. 18 Removing tension spring

37_isufa111020019.png
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Fig. 19 Removing tension pulley nut




7. Remove tension spring, Fig. 18, tension pulley nut, Fig. 19, tension center, pulley and timing belt.
8. Disconnect engine control cable and wiring harness from fuel cut-off solenoid.
9. Disconnect fuel hoses and injection pipes. Use a back-up wrench to hold delivery holder when loosening sleeve nuts on injection pump side.
10. Install a 6 mm bolt with a pitch of 1.25 into threaded hole in timing pulley to prevent pulley from turning, then remove bolts retaining injection pump timing pulley and remove pulley using suitable puller.

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Fig. 33 Injection pump retaining bolts and nuts




11. Remove injection pump flange retaining nuts and rear bracket bolts, Fig. 33, then remove injection pump.

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Fig. 1 Injection pump flange to front plate alignment mark




12. Install injection pump with marks on flange and front bracket aligned, Fig. 27.
13. Install injection pump timing pulley and torque bolt to 42-52 ft. lbs. (5.8-7.2 kg-m).

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Fig. 7 TDC timing mark




14. Rotate crankshaft until No. 1 piston is at TDC compression stroke, Fig. 7, and marks on timing pulley are aligned, Fig. 20.
15. Install timing belt. Refer to ``Timing Belt, Replace'' for procedure.

tims auto repair :
1982 Isuzu Truck Pickup L4-2238cc DSL (C223)
Fuel Delivery and Air Induction Adjustments: Injection Timing Adjust
23_isuea111004001.png
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Fig. 1 Injection pump flange to front plate alignment mark






1. Check that alignment mark on injection pump flange is aligned with alignment mark on injection pump front bracket, Fig. 27.

26_isufa111020007.png
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Fig. 7 TDC timing mark




2. Bring No. 1 cylinder to top dead center compression by turning crankshaft until timing mark on pulley aligns with pointer, Fig. 7.

41_isufa111020023.png
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Fig. 23 Injection pump flange & camshaft timing pulley alignment marks




3. Remove timing pulley housing and check that timing belt is properly tensioned, and that timing marks are aligned, Fig. 23.

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Fig. 28 Static timing gauge J-29763 installed on pump




4. Disconnect injection pipe from injection pump and remove distributor head screw. Install static timing gauge J-29763, Fig. 28 then set lift to approximately .040 inch (1 mm) from plunger.

47_isufa111020029.png
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Fig. 29 45-60 BTDC timing mark




5. Bring No. 1 piston to 45-60° before top dead center by turning crankshaft, Fig. 29, then set dial indicator to zero. Turn crankshaft slightly in both directions and check that gauge indication is stable.

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Fig. 30 15 BTDC timing mark

49_isufa111020031.png
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Fig. 31 Adjusting injection timing




6. Turn crankshaft in normal direction of rotation and note reading on dial indicator when the 15° timing mark on pulley is aligned with pointer, Fig. 30. If dial indicator reading is not .020 inch (.5 mm), hold crankshaft at the 15° mark and loosen the two nuts on injection pump flange, Fig. 31. Move pump until reading on dial indicator is .020 inch (.5 mm), then tighten nuts.

tims auto repair :

Please RATE my answer by clicking the RATINGS button, so I can get credit for my work,,the [BAD SERVICE] and [POOR SERVICE] rating does not give me credit].i don't receive commission if you give a less than 3 star/smiley rating ..I'm not always going to be giving you good news,so please don't let this stand in the way of you accepting my answer.it does not cost you more money.we will still be able to communicate,,.please understand,i can not see,hear or touch the vehicle and only know what you tell me. Bonuses and positive feedback are appreciated!if you are not satisfied with my answer,please do not leave bad feed back,i will gladly opt out and let another expert handle the question.if i have sent any diagrams,please print them.they will only stay on here for an hour or so...sometimes you may need to right click the image,then save picture as]to save it to your computer so you can open it with your picture program...PLEASE ASK IF YOU NEED MORE HELP

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